. Author manuscript; available in PMC: 2011 Oct 31.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2009 Jun 18;75(1):294–301. doi: 10.1016/j.ijrobp.2009.03.043

Table 1.

Cost function for optimization for IMRT.

Structure	Cost Function	Weighting Factor
CTV	100% volume, dose ≥ 38.5 Gy, 99% volume, dose ≤ 40.4 Gy	100 100
PTV	95% volume - dose ≥ 38.5 Gy 99% volume, dose ≤ 40.4 Gy	50 50
LAD	Dose ≤ 3 Gy	1000
Heart	Dose ≤ 3 Gy	1000
Uninvolved ipsilateral breast	Dose ≤ 40.4 Gy Minimize dose	0.001
Lung	90 % volume - dose ≤ 5 Gy	0.001